Millie is invited to shadow the mayor for a day at city hall. The detectives are given a relatively simple task, but Mike and Marta get distracted when they spot Old Man McGillicuddy. Trying to solve too many problems on her own, Millie gets overwhelmed for fear of letting the Mayor down, but learns quickly what it means to be a leader. / The school is in an uproar as the kids are set to vote between purchasing new equipment for the science lab or a new slide for the playground. Millie campaigns for lab equipment and Marta for the slide. Meanwhile, Mike searches for the identity of a local radio celebrity, Sammy the Sloth, who is coming to school to announce the winner!